Ventilating attachment for windows and the like



2 SHEET -SHEET 1.

`O. P. ERHARDT.

VENTILATING ATTACHMENT FOR WINDOWS AND THE LIKE.

FILED FEB.. 26, 1918.

Mar. 6, 192.

Mar. 6, 1923,

0. E. ERHAHDT.

VENTILATING ATTACHMENT FOR WINDOWS NND THE LIKE.

2 SHEETS SHEET 2A FILED FEB. 26, 1918.

7 nu m A ff W Patent Mar. 6, 1923.

OSCAR P. EREARDT, OF WEST HAVEN, CONNECTICUT, ASSIGNOR TO THE C. GILBERTCOMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION F CONNECTICUT.

Application filed. February 26, 1918. Serial No. 219,529.

To all 'whom t may concern Be it known that OSCAR P. ERHARDT, a citizenof the United States, residing in West Haven, county of New Haven, andState of Connecticut, have invented certain new and useful Improvementsin Ventilating Attachments for Windows and the like, of which thefollowing is a full, clear, and exact description. 1

This invention relates to ventilators for windows and the like, and moreparticularly to an adjustable ventilator struct-ure provided with apo-wer driven fan adaptedv to be placed in a window frame.

One object of this invention is to provide an adjustable ventilator thatmay be easily and quickly mounted in different sized window frames. Morespecifically, one object is to provide a. longitudinally adjustableVentilator which may be removably mounted in a window frame betweeneither the upper or lower sash and the window frame.

Another object of this invention is to provide a ventilator for a windowwhich may be easily removed from the Winde-w when it is desired to closethe same.

Still another object of the invention is to provide an adjustableventilator structure having a power driven fan, which is adapted tocompletely close thespace around the fan between the open window and thewindow frame so that the currents of air produced by the fan willvnot bepermitted to travel in the path o-f a circle in and out of the window.

When it is desired to ventilate a room by means of a power driven fanthis may be acf complished by placing the fan in the window so that itwill either blow the fresh air into the room or blow the stale air outof the same. In either case if the room is to be quickly and thoroughlyventilated the fan must be so positioned that a continuous flow of airwill pass through the same without producing currents of air whichtravel more or less in the path of a circle through the fan a number oftimes. That is, in order that the Ventilating fan may quickly andthoroughly ventilate the room, the space around the fan should beclosedto prevent the same air from passing through the fan a number of times.i

An important object of this invention, as above stated, is to provide anadjustable Ventilating attachment that may be quickly and easilyadjusted t'o the width of the window or the like in which it is placed,in order to completely close the space around the fan between the windowframe and the opened window.

To these and other ends, the invention consists of the novel featuresand combinations of parts to be hereinafter described and claimed.

In the accompanying drawings,

Fig. 1 is a front View of a window showing my improved ventilatormounted there- 1n between the upper part of the window frame and theupper sash, which has been partly lowered;

Fig. 2 is a viewof the complete ventilator removed from the window,showing the opposite face to that shown in Fig. 1;

Fig. 3 is an edge View of the device shown in Fig. 2;

Fig. 4 is an enlarged sectional view, taken on the line 4--4 of Fig. 3,looking in the di# rection of the arrows;

Fig. 5 is a fragmentary sectional View, taken on line 5 5 of Fig. 4,showing the same in an enlarged scale; and

Fig. 6 is an end view of the electric motor and the brackets whichsupport the same, the fan being removed.

In Fig. 1 of the drawing, I have shown an ordina-ry type of window,consisting of the window frame 10 and the upper and lower window sashes11 and 12, respectively. In this figure, I have shown the upper sash 11as being lowered and in the space between the top of the sash 11 and theupper portion of the window frame 10 I have shown my improved ventilatordesignated in its entirety by the numeral 13.

The body portion of my ventilator consists preferably of a rectangularshaped board or similar device 14, and a second rectangular shaped boardor similar device 15 slidably secured to the member 14. The members 14and 15 are preferably retained in slidable engagement by brackets 16 and17. These two brackets are similar in construction so that only one needbe described in detail. The bracket 17 consists preferably of a. longnarrow strip ofA metal which extends across one face of the member 14.It is then bent ateach end at a` right angle to form the portions 17',which portions extend across the opposite edges of the members 14 and15. The portions 17 are then bent at right angles forming thel portions17, which latter portions are provided with screw holes to receivescrews 17, These screws pass through the cnd portions 17 into the member15 and rigidly secure the bracket 17 to the member 15. The length of theportions 17 of the bracket 17 should slightly exceed the combinedthicknesscf the members 14 and 15 in order to provide a space betweenthe portions 17 and 17, of the bracket large enough to permit themembers 14 and 15 to slide freely therein. In order that the members 14and 15 may be clamped in place after they have been properly adjustedthe bracket 17 is provided with the clamping elements, designated intheir entirety by the numeral 18. These elements are identical instructure and consist of a substantially C-shaped clampl 19 (see Fig.5), which is fitted over the bracket 17. This member is provided with adrill h'ole which loosely receives the threaded portibn of the wingedbolt 20, which bolt is provided with a threaded portion 21 havingthreaded engagement with the threaded opening formed through thebracket- 17 From he above description it will be seen that the bracket17 and the similar bracket 16 retain the members 14 and 15 in slidingengagement with each other -so that they may be easily adjustedlongitudinally as may be desired, and when the proper adjustment isobtained the members 14 and 1 5 may be easily and quickly clamped inthis position by means of the clamping devices 18, since the winged bolt20 may be rotated to force the inner end of the bolt 21 into contactwithone face of the clamp 19, and thus force the face of this member whichcontacts with the member 14 into clamping engagement with the same.

The bracket member 16, as above stated, is similar in structure to thebracket 17, but is not provided with the clamping devices 18, since thetwo clamping devices formed upon the bracket 17 will be sufficient toclamp the members 14 and 15 in the desired position. The bracket16,'however, is necessary to retain the members 14 and 15 in slidingengagement with each other. This bracket 16 is preferably applied to theventilating device 13 in the reversed position to the bracket 17, thatis, the ends of this bracket 16 are rigidly secured to the member 14 byscrews 17 a, as shown in Fig. 1, whereas the ends of the bracket 17 aresecured to the member 15, as shown in Fig. 2.

The sliding member 14 has formed therein adjacent its outer end arelatively large circular opening 22' in which opening a power drivenfan having the fan blades 23 is rotatably mounted. Any of the well knowntypes of electrical fans may be used for this purpose, consisting 'of anelectric motor having` current supply wires 24. In order to 'rigidlymount the motor 24 upon the member 11 so that the fan which is mountedupon one end of the armature spindle of the .motor may be properlypositioned within the opening 22. I provide the motor 24 with a.supporting bracket consisting of a disklike plate which is rigidlysecured to the inner end of the motor by any desired se` curing means.lsuch as screws 26. The 'disklike plate 25 preferably has a. plurality ofsupporting bars or straps 27 secured thereto by any desired securingmeans, such as rivets 28. These supporting bars extend outward from themember 25 in a radial direction and have their outer ends rigidlysecured to the member 14, as shown in Figs. 1, 2 and 3. The means forsecuring the outer ends of the bars 27 to the member 14 consistpreferably of bolts 29 which pass through the member 14, and through thedrill holes BO'forined in the outerend of the members 27. These bolts 29are provided with the usual washers 31 and threaded nut by means ofwhich the straps 27 may be clamped in place upon the member 14. In orderto provide a guard which will prevent objects from coming into contactwith the rapidly rotating blades 23 of the fan, I have provided the wiremesh guard 33 upon one face of the member 14, although it will beobvious that this guard may be placed on either or both sides of-the fanif desir-. ,s able. The guard has an opening formed at its centersufficiently large to clear the rotating spindle of the motor, and theouter edges of the guard may be secured in place upon one face of themember 14 by the bolts 29 and washers 31 above mentioned asY shown inFig. 1.

From the foregoing description` taken in connection with the drawings.it will be seen that my Ventilating attachment may be easily and quicklyapplied to any window, the width of which does not exceed the range orattachment permitted by my device, ,and it will also be seen that myventilator may1 be applied either at the top or the bottom of thewindow, that is, it may be applied between the top of the upper sash andthe upper part of the window frame, as shown in Fig. 1; or it mayequally as well be applied in the lower part Vof the window between thelbottompart of the wlndow' fiume and the lower sash. It will also beapparent that when my device has been placed in a window and the members14-and 15 have been adj usted longitudinally relatively to each other toinsert their ends in the grooves formed in the oppositesides of thewindow fra-me in which the window sashes slide, and have been clamped inthis position by the clamping means 18, my device will be rigidlysecured within the window frame, so that there will be no danger gf thesame being accidentally displaced therefrom.

Furthermore, should it be desired to use my improved ventilator toproduce currents of air in the opposite direction from that in which thecurrents of air would be produced when my ventilator is placed in thewindow as shown in Fig. l, this may be easily done by reversing theposition of the ventilator; that is, assuming that my ventilator whenpositioned within the window, as shown in Fig. l, operates to blow freshair into the room, and it was desired to reverse the device so that itwould blow the stale air out of the room, this may be easily done bysimply turning my Ventilating attachment over so that it would assumethe position shown in Fig. 2, and then placing the same back in thewindow.

From the above disclosure it will be apparent that I have devised aVentilating attachment which may be easily and quickly mounted in andremoved from a window frame, which is simple in construction, may beeasily and inexpensively manufactured, and which is adapted to be usedin windows of various sizes and shapes.

I have not attempted to describe the modifications of the constructionwhichl may be adopted without departing from the scope of the inventionas defined in the claims.

What I claim is:

l. A Ventilating attachment for windows or the like comprising a pair ofboards slidingly bracketed together and adapted to close a space betweenthe window and the window frame, brackets for joining said boardstogether comprising a pair of straps respectively secured to one boardand enciri cling the other, clamping means mounted upon one of saidstraps comprising a thumb screw and a substantially C shaped springmember, said screw passingthrough one portion of the spring member,screwing through the strap into contact with another portion of thespring member to force same against the encircled board, one of saidboards being provided with a circular opening adjacent the end thereof,an electric fan mounted upon a surface of said board with the fan ofsame arranged to rotate within said opening substantially filling sameand a Wire mesh guard over said opening substantially in the plane ofthe surface of said board, said fan arranged to force air from one sideof the window to the other through the wire mesh covered opening.

2. A ventilating attachment for windows or the like comprising, a pairof boards slidingly bracketed together, one of said boards having acircular opening adjacent the end thereof, a wire mesh screen coveringsaid opening, a motor, having a shaft extending through said screen,mounted upon said board central with said opening, a ring secured tosaid motor and flat strips having ends secured to said ring andextending radially therefrom in spaced relation, the opposite ends beingsecured to the board adjacent the edge of said opening and a fan mountedupon said extending shaft adapted to revolve within said opening in theboard to draw air from one side of said board to the other, said fansubstantially filling said opening and being between the inner and outersurfaces of said board.

3. In a Ventilating attachment for windows or the like, the combinationof two boards slidably mounted one upon the other, each of said boardshaving a bracket mounted thereon which completely overlaps the otherboard, one of said brackets having a pair of clamping members thereonarranged to clamp against the upper and lower edges of the boardoverlapped, one of said boards having a circular opening adjacent an endthereof, a motor driven fan mounted concentric with said opening withthe fan blade lying between the inner and outer surface of said board` awire mesh guard over said opening and supporting means for said motordriven fan comprisinga number of radially extending straps secured tothe frame of the motor and to the board adjacent the edge of saidopening respectively.

In witness whereof, I have hereunto set my hand.

OSCAR P. ERHARDT.

